We have not been able to find anything through various Google searches, so we are unsure if it is possible to lock a coffin. But if you can, this is the perfect keychain for you! Whether it's valuables or your Nan, you can be sure that you have a well marked key to allow you, and only you, access. If these coffins with locks have the lock on the inside, then it is probably a good idea to leave a key in there for them -- and this keychain will let them know that it's not just a random key placed in there with them.
The size of the coffin is approximately 60.0x24.0x15.6mm (2.36 x 0.94 x 0.61 inches) attached to a 28mm (1.1 inch) keyring.
Materials & Process
Layer by layer this coffin is 3D printed using PLA (polylactic acid) which is a biodegradable and bioactive thermoplastic aliphatic polyester derived from renewable resources, such as corn starch. It takes just over 2 hours to print each coffin, 0.1mm (0.004 inches) layers at a time.
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The 3D printing process is not perfect so there may be blemishes in the surface finishes and visible layer lines. Items will not be exactly as pictured and as much as we try to take colour accurate photos, the colour may be slightly different than viewed on your screen.